Organ relay



M. H. sAMPsoN ORGAN RELAY Filed July 25. 1923 j; 16 my. 1.

S14/ventana:

j Patented ug. 23, 1927.`

UNITED "STATESP'ATENr-oFFicE.

` MURICE H. SAMPSON,

ORGAN Application ined Iuiy A2a,

The invention relates to improvements in musicalr instruments, and particularly to such instruments of the electrically operated g lPrimarily the object of the invention is;

the provision of a novel electrical relay adapted to be'interposed in thekey circuit of an i electrically operatedy musical instrument,

whereby other instrumentalities havingV `har-y 10 inon-iousrrelation to the: note produced on operation. o f the particularV keyare actuated Yondepression of the key. l

i @they fglejeets:'will appear fromthe (le-l i scription, to "those skilled in-the art, and f 1g with such in view they invention resides 11n cut away, and

Figure 4, a bottom plan. ln the preferred embodiment .as illustrated, the relay is adaptedfor use 1n elec- Y trically operated pipe lorgans, being interj 39 posed in the key circuit, Vone for each key.

It is obvious that it may be used as Well in the case of pianos, and other such Yinstruments as desired.

In detail it 'consists of a base block l1y of wood or suitable insulating material provided on its 'under face with a deep, relatively wide longitudinal groove or channel 2, the sides of the block being vcontinued at one end an appreciable length to provide the 40 arms 3 which are in depthV onlyV half the depth of the block.

yExtended across the end of the block adjacent the arms 3 is'a strip'fl of insulating material, secured to the block and supporting the poles 5 of a horse shoe magnet 6,7the

bodyof which is disposed within the channel The pole pieces/5 projectthrough and slightly beyond the strip 41.-, and are supported therein in rigid relation so that the to strip and magnet form in effect, a unit of assembly. Lead wires T from the magnet coils 8 are adapted for connection in the circuit of an organ key V(not shown). The ar! mature of the relay consistsl ofa substantial- 56 ly L shaped plate 9 of suitablyfmagnetic material provided with upstruck vears 10 atk ory 'cIIIc'AGd ILLINOIS. y

RELAY. y

1823." Serial No. 653,357.

each side thereof, -andis pivotally mountedonarod llfpassed through the arms 3 and plate ears 1t). These' ears are so arranged that theshort arm ofthe armatureplate will extend inwardly of thel block and Vrest on a pad A12.011 the uppery face of the base block. l'ne ears l0 extend in ardirection opposite to that of theshort arm of' the 4,armature plate,

and approximately from the 'bend of the L,

jso that in4 the normal horizontal position of therblock `the'. weight ofthe longAarin4 will serve to space thearmature from the magnet poles `asshown in'Figure 1.4 The width of the: armature plate is appreciably less than that ofthe block so-thata 4clearance is proi vided between thearms 3 and ears lffor free .movement ofthe armature; Insulating 'l washerslare disposedbetween-the ears and arms on the pivot rod 11. y

Detachably secured to the upper face of the base block is a contact block 14, of insulating material and provided with ka plurality of longitudinal grooves 15 in its under face to receive and guide lead wires 16 of a plurality of circuits, containing bells, chimes,

etc., of .the same pitch as that of the key. The various instrumentalitiesof the dii'erent circuits are sel-ective through the medium of the usual master key or stop construction.` r1`he wires 16 are spaced from the upper facey of the base block by'nieans of a spacerstrip 17 atv one end beneath the contact block,

fthrough whichend the wires are passed tov ythe grooves 15. `All of the wires 16 project beyond the opposite end of the contact. block and terminate in a common plane over the short arm of thel armature plate,A being spaced thereaboveby a spacer strip 18 supporting the ends of the wires. Secured on the upper face of the short arm of the plate 9 and at the end thereof, is a transverse conl. tact bar 19 which onelevation serves to engage the projecting ends ofvwires 16 with a wiping action and thereby close the various circuits to actuate the instrumentalities con-V trolled thereby. A pad 2O is disposed on the armature plate adjacent the pole pieces of the magnet to prevent clicking when .the armature is drawn in on energization of the magnet. 4 j

In operation, as each organ key is pressed,

the corresponding relay magnet will be energized and the armature plate will be rocked on its pivot elevating the contacti'ibar to engage the supplementary circuit wires and close the circuits in which theyyarev interposed. Vhile all supplemental Circuits are Closed at this point, only those rendered operable through the control means employed will function, the various instrumentalities being selective'. The mounting of the armature plate permits the armature to return by gravity on deenergization of the magnet, eliminating useI of springs. Return of the armature lowers the Contact bar and breaks the supplemental.circuits While I have illustrated and described Certain details entering into the Construotion and operation of the invention, I desire it to be understood thatl I do not intend that itshouldhelimited to suoli, but that any (-hanges and` nlodiiieations may be made therein as will fall Within the scope of the invention as claimed,

I claim?"4 n A relay comprising a.` horizontal insulating base block having a longitudinal Channel in its under face andextending from end to end, said block having the upper portion of one end extended at each side to form a pair of arms of reduced thickness, an insulating strip secured across one end of said channel to said block beneath said arms, an

elongated horse shoe magnet having the two ends of the core thereof passed through said strip for support of said magnet with the body of said magnet extemling into and being housed within the channel of said block, an L-shaped armature plate having a depending long arm and a horizontal short arm, integral ears extending at right angles from opposite side edges of the long arm of said armature plate directly adjacent the bend thereof, a pivot rod passed through said block arms and plate ears for pivotal suspension of the armature with the long arm thereof depending adjacent the poles of said magnet and the short arm thereof eX- tending oppositely from the ears, and in the direction of the magnet, a Contact blook detachahlyV secured on the upper face of said base block, a plurality of circuit leads disposed. in said Contact block and. extending over the short arm of. said armature plate` 'and means Carried. by the short arm of said armature plate for simultaneous circuit closing engagement of all of said circuit leads upon energization of the magnet.

In testimony whereof I aix my signature,

MAURICE H. SAMPSON. 

